Results 1 to 6 of 6

Thread: Modem model versus download speed?

  1. #1
    Marco
    Guest

    Modem model versus download speed?

    How much does my older cable modem affect download speed?

    How much speed loss would be expected from a wireless router in the
    mix?

    I'm thinking of down-tiering to Comcast 1 Mbps service (we do very
    little video) would I expect a similar percentage drop?

    thanks

    ====================
    from my post at alt . online-service . comcast
    original:
    download speed testing

    I get around 4.5 to 5.5 Mbps using these:

    http://speedtest.comcast.net/
    http://www.speakeasy.net/speedtest/

    but only get 2.7 to 3 Mbps using this site:
    http://www.speedtest.net/index.php

    according to Comcast I should be getting 6 Mbps

    Anybody test lately and which sites seem more believable?

    (should I complain that I don't get 6 Mbps)

    note:
    upload speed seems more consistent around 1 Mbps
    It seems that the chosen server for each test excessively influences
    the test

    a response:

    > Old modem? Post modem model and version numbers
    > "IF" your modem supports it check signal power and snr athttp://192.168.100.1/
    > If you get the right person when calling Comast they might check your
    > signal levels from their end if your modem doesn't support it..


    my followup:

    SurfBoard 3100 appears to be DOCSIS 1.1

    Downstream Value
    Signal to Noise Ratio 37 dB
    Power Level 0 dBmV
    The Downstream Power Level reading is a snapshot taken at the time
    this page was requested. Please Reload/Refresh this Page for a new
    reading
    (this did not change on refresh)

    Upstream Value
    Power Level 56 dBmV

    what is a good reading?

  2. #2
    Ken Whiton
    Guest

    Re: Modem model versus download speed?

    *-* On Sat, 25 Apr 2009, at 05:46:49 -0700,
    *-* In Article
    aaf8eb44-f40e-4a63-a099-f4d8d80debbd...oglegroups.com,
    *-* Marco wrote
    *-* About Modem model versus download speed?

    > How much does my older cable modem affect download speed?


    Probably not much. According to
    <http://www.speedguide.net/faq_in_q.php?category=92&qid=170>, the
    changes in DOCSIS 2.0 over DOCSIS 1.1 are on the upstream channel.
    There's no mention of any enhancements to the downstream channel.
    Furthermore, <http://en.wikipedia.org/wiki/DOCSIS#Speed_Table> lists
    the same downstream "Maximum usable speed" for both versions.

    > How much speed loss would be expected from a wireless router in the
    > mix?


    > I'm thinking of down-tiering to Comcast 1 Mbps service (we do very
    > little video) would I expect a similar percentage drop?


    That's the service level I have.

    > ====================
    > from my post at alt . online-service . comcast
    > original:
    > download speed testing


    > I get around 4.5 to 5.5 Mbps using these:


    > http://speedtest.comcast.net/


    On three tests I get 0.875, 0.900, and 0.872 Mbps download speed,
    and 0.365, 0.364, and 0.362 Mbps upload speeds, using their Boston,
    Mass., server, the one closest to me.

    > http://www.speakeasy.net/speedtest/


    928, 929, and 880 Kbps download, 360, 365, and 191 Kbps upload,
    using New York City.

    > but only get 2.7 to 3 Mbps using this site:
    > http://www.speedtest.net/index.php


    0.87, 0.87, and 0.90 Mbps download, 0.36, 0.36, and 0.36, upload,
    using Portland, Maine. As you can see, my results there are right in
    line with the other two, so I don't know why yours are so much slower
    than the others.

    Note that I have a router, and I'm streaming Internet radio to my
    other computer, so I know that these tests aren't getting the full
    benefit of my available bandwidth.

    > according to Comcast I should be getting 6 Mbps


    If you read the fine print you'll find that that's *UP TO* 6 Mbps.

    > Anybody test lately and which sites seem more believable?


    > (should I complain that I don't get 6 Mbps)


    > note:
    > upload speed seems more consistent around 1 Mbps
    > It seems that the chosen server for each test excessively
    > influences the test


    > a response:


    >> Old modem? Post modem model and version numbers
    >> "IF" your modem supports it check signal power and snr at
    >> http://192.168.100.1/ If you get the right person when calling
    >> Comast they might check your signal levels from their end if your
    >> modem doesn't support it..


    > my followup:


    > SurfBoard 3100 appears to be DOCSIS 1.1


    Mine is a Motorola SURFboard SB5100, which supports DOCSIS 2.0.

    > Downstream Value
    > Signal to Noise Ratio 37 dB


    36 dB here According to this post, from December, 2004:

    http://groups.google.com/group/comp....105dcdc643e030

    it should be above 30, so we're both good there.

    > Power Level 0 dBmV


    4 dBmV here From the same post: "The recommendation is +15 to
    -15, so again we're both good. :-)

    > The Downstream Power Level reading is a snapshot taken at the time
    > this page was requested. Please Reload/Refresh this Page for a new
    > reading
    > (this did not change on refresh)


    > Upstream Value
    > Power Level 56 dBmV


    49 dBmV here Also from the same post: "Upstream should be below
    55db", so you're marginally high there.

    > what is a good reading?


    From another old thread here is what a poster was told by a Cox
    level 2 tech:

    Ideal Normal

    SNR 30+ mid 30's

    Down Power 0 0-3

    Up Power 50 or lower 30-50

    Ken Whiton
    --
    FIDO: 1:132/152
    InterNet: kenwhiton@surfglobal.net.INVAL (remove the obvious to reply)

  3. #3
    Andrew Rossmann
    Guest

    Re: Modem model versus download speed?

    In article <aaf8eb44-f40e-4a63-a099-
    f4d8d80debbd@y6g2000prf.googlegroups.com>, prenom_nomus@yahoo.com
    says...
    > How much does my older cable modem affect download speed?
    >
    > How much speed loss would be expected from a wireless router in the
    > mix?
    >
    > I'm thinking of down-tiering to Comcast 1 Mbps service (we do very
    > little video) would I expect a similar percentage drop?
    > my followup:
    >
    > SurfBoard 3100 appears to be DOCSIS 1.1


    It should be more than enough for the 1M service. The 3100 is ancient.
    Although DOCSIS 1.x and 2.x support up to 38M down, many older modems
    don't have enough horsepower to actually push data that fast. I used to
    have an RCA that peaked at 5M.

    --
    If there is a no_junk in my address, please REMOVE it before replying!
    All junk mail senders will be prosecuted to the fullest extent of the
    law!!
    http://home.att.net/~andyross

  4. #4
    1PW
    Guest

    Re: Modem model versus download speed?

    On 04/25/2009 05:46 AM, Marco sent:
    > How much does my older cable modem affect download speed?


    Probably not the slightest bit noticeable.

    >
    > How much speed loss would be expected from a wireless router in the
    > mix?


    Again - next to nothing.

    >
    > I'm thinking of down-tiering to Comcast 1 Mbps service (we do very
    > little video) would I expect a similar percentage drop?


    This could be a fine economic step.

    >
    > thanks
    >
    > ====================
    > from my post at alt . online-service . comcast
    > original:
    > download speed testing
    >
    > I get around 4.5 to 5.5 Mbps using these:
    >
    > http://speedtest.comcast.net/
    > http://www.speakeasy.net/speedtest/


    Make sure that you select site(s) that are close to your location.
    Multiple tests from several test sites would be good.

    >
    > but only get 2.7 to 3 Mbps using this site:
    > http://www.speedtest.net/index.php
    >
    > according to Comcast I should be getting 6 Mbps
    >
    > Anybody test lately and which sites seem more believable?


    Sometimes I peak at close to 22Mbps down & 1.0+ up.

    >
    > (should I complain that I don't get 6 Mbps)


    Make many tests between your location and a nearby speed test near
    Tucson. These tests should be at various times of the day and days of
    the week. If after compiling the results you see your download speed
    isn't approaching your tier, it's time to complain. Of course Comcast
    will shift the blame to you and your computer system. Be persistent.

    >
    > note:
    > upload speed seems more consistent around 1 Mbps
    > It seems that the chosen server for each test excessively influences
    > the test
    >
    > a response:
    >
    >> Old modem? Post modem model and version numbers
    >> "IF" your modem supports it check signal power and SNR at http://192.168.100.1/
    >> If you get the right person when calling Comcast they might check your
    >> signal levels from their end if your modem doesn't support it..

    >
    > my follow up:
    >
    > SurfBoard 3100 appears to be DOCSIS 1.1


    My older Linksys DOCSIS 1.1 modem is seeing 22 Mbps downloads.

    >
    > Downstream Value
    > Signal to Noise Ratio 37 dB
    > Power Level 0 dBmV
    > The Downstream Power Level reading is a snapshot taken at the time
    > this page was requested. Please Reload/Refresh this Page for a new
    > reading
    > (this did not change on refresh)
    >
    > Upstream Value
    > Power Level 56 dBmV
    >
    > what is a good reading?


    You have good readings.

    <http://www.dslreports.com/faq/5862>

    Pete
    --
    1PW @?6A62?FEH9:DE=6o2@=]4@> [r4o7t]

  5. #5
    Marco
    Guest

    Re: Modem model versus download speed?

    On Apr 25, 10:14*pm, Ken Whiton <kenwhi...@surfglobal.net.INVAL>
    wrote:

    > *-* Marco wrote
    > *-* About Modem model versus download speed?
    >
    > > How much does my older cable modem affect download speed?


    > > I'm thinking of down-tiering to Comcast 1 Mbps service (we do very
    > > little video) would I expect a similar percentage drop?

    >
    > * * * That's the service level I have.


    Do you have VOIP service? We are thinking about getting magic jack
    and wondering if the upstream speed would be an issue at the 1 Mbps
    service level.

    by the way thanks for the previous replies - very helpful

  6. #6
    Ken Whiton
    Guest

    Re: Modem model versus download speed?

    *-* On Sat, 2 May 2009, at 05:45:12 -0700 (PDT),
    *-* In Article
    9f7d5e40-95da-4b5b-9128-6edcfacea0dd...oglegroups.com,
    *-* Marco wrote
    *-* About Re: Modem model versus download speed?

    > On Apr 25, 10:14 pm, Ken Whiton <kenwhi...@surfglobal.net.INVAL>
    > wrote:


    >> *-* Marco wrote


    >>> How much does my older cable modem affect download speed?


    >>> I'm thinking of down-tiering to Comcast 1 Mbps service (we do very
    >>> little video) would I expect a similar percentage drop?


    >> That's the service level I have.


    > Do you have VOIP service?


    No.

    > We are thinking about getting magic
    > jack and wondering if the upstream speed would be an issue at the 1
    > Mbps service level.


    A little poking, probing, and digging at the magicJack web site
    uncovers the following answer to several related FAQuestions:

    "A minimum bandwidth UPLOAD speed of 128 kb/s (or kbit/s or kbps) is
    required."

    http://service.liveperson.net/hc/s-7...66&action=view
    http://service.liveperson.net/hc/s-7...37&action=view
    http://service.liveperson.net/hc/s-7...71&action=view

    Since the upload speed test results I got were almost three times that
    value, I wouldn't think it would be a problem.

    > by the way thanks for the previous replies - very helpful


    You're welcome.

    Ken Whiton
    --
    FIDO: 1:132/152
    InterNet: kenwhiton@surfglobal.net.INVAL (remove the obvious to reply)

Similar Threads

  1. A pipex of 8MB and a download speed of 1.2kbps.
    By Never Known in forum Broadband Tweaks Help
    Replies: 5
    Last Post: 01-14-09, 09:48 AM
  2. Slow DSL Download speed (fine upload speed)
    By mojo8472 in forum General Broadband Forum
    Replies: 6
    Last Post: 12-19-08, 09:47 PM
  3. How to Speed Up Download Speed??
    By darknessinzero in forum Broadband Tweaks Help
    Replies: 21
    Last Post: 12-13-08, 06:33 AM
  4. Replies: 0
    Last Post: 07-17-08, 12:54 AM
  5. Slow browsing but decent download speed
    By Tatsuoh in forum General Broadband Forum
    Replies: 10
    Last Post: 01-29-08, 12:26 AM

Bookmarks

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •